Improvement in harrows



E. BRADLEY Harrow.

No. 57.851; wPat-ented Sept. 11, 186 6.

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N. PEIERS, PHOTO-LITHOGRAPHER, WASHINGQDN. D C

UNITED STATES PATENT OFFICE.

EVERAL BRADLEY, OF CLYDE, NEW YORK.

IMPROVEMENT IN HARROWS.

Specification forming part of Letters Patent No. 57,851, dated September11, 1866.

To all whom it may concern:

Be it known that I, EVERAL BRADLEY, of Glyde, in the county of Wayne andState of New York, have invented a new and useful Improvement inHarrows; and I do hereby declare that the following is a full and exactdescription thereof, reference being had to the accompanying drawings,making part of this specification.

Figure 1 is a plan of my improved harrow; Fig. 2, a side elevationthereof; Fig. 3, perspective view of one of the joints between the wingsand center.

Like letters of reference indicate corresponding parts in all thefigures.

My invention consists, essentially, in the combination of hinged wingswith the ordinary triangular harrow, so arranged that the bars ortimbers containing the teeth shall converge forward toward the line ofmotion, so as to pass easily over a mound or elevation without veeringto one side, and so arranged that said wings may be turned up over thecentral harrow, for the purpose of lessening the draft and increasingthe weight of the latter, or removed from said center at pleasure.

As represented in the drawings, A is a central harrow, and B B thewings, these parts being composed of bars or timbers a a, with teeth I)I; set therein, as usual. The central harrow, A, is made in the usualtriangular form. Its bars or timbers rest on iron rods or bars 0 c, andto its forward end is attached th ordinary clevis d.

The wings B B have their bars parallel with the sides of A, in whichposition they converge toward a center forward of the harrow, asindicated by the red lines in Fig. 1. These bars rest on rods ff, whichhinge with c c by means of eyes 9 g, fitting over bearings It h,pointing forward parallel with the bars. The bars forming the wings areretained in position at all times by V-shaped braces 43 i, as clearlyshown in Fig. 1.

Thus arranged, it will ,be seen that I retain the usual triangular formof the central harrow, A, which is the easiest of draft, and the mosteffective in pulverizing the soil, as the apex of the harrow alwayspoints forward in the direction of motion. And it will also be seen thatI arrange the wings B B parallel to the sides of the central harrow,thereby pointing forward in the same way. All these parts, therefore,converge forward toward a central point.

The advantage of this arrangement is that, in passing a mound orelevation of the soil, the harrow does not run around it, or veer to oneside, but passes directly over.

A set of square harrows have before been hinged or jointed together soas to form a compound harrow 5 but in all such cases with which I amacquainted the teeth all run in one direction and at one angle to theline of motion, and in striking an elevation of the soil they veer toone side around it. In such cases, also, the draft is greatly increased,with no corresponding improved result. In lightness of draft, withefficiency of action, my arrangement presents special advantages.

In addition to the above it will be seen that I am enabled to turn thewings up over the central harrow, as shown in red lines, thereby notonly lessening the draft at any time, but also weighting the centralharrow whenever it is desirable to cut deep; or, if desirable, the wingscan be detached from the central harrow by simply slipping the eyes gforward from off the hearings h, when the central harrow may be usedalone.

I am aware of no compound harrow in which the wings on opposite sidescan be turned over the central harrow to weight the same as inthismanner.

It will be seen that any ordinary triangular harrow may be adapted toreceive the wings by simply securing the bearings h h to its sides.

I do not claim, broadly, a compound harrow, as I am aware that such isnot new; but

\Vhat I claim as my invention, and desire to secure by Letters Patent,is

.The combination, with the triangular cen tral harrow, A, of parallelwings B B, converg ing forward in the direction of motion, theconnection of said parts being made by'the hinges g h in such a mannerthat the wings can be detached at any time or turned up over the centerto weight the same, the whole arranged and operating as and for thepurpose herein specified.

- EVERAL BRADLEY.

Witnesses:

G. O. GINCKELBAUGH, ALMON HARPER.

